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Should you close your option early, or let theta do the rest?

Closing a sold option early locks in most of the premium and frees the cash. Holding to expiry collects the last bit, while the full risk stays on until the final day. Here's how to weigh what's left against the risk per day.

Options guide · 8-minute read · Updated 2026-10-27

The short answer

When you sell an option, Theta is the amount of value it loses each day from time passing. That melt is what the seller collects. Once most of it is in, there's a choice: buy the option back now and keep what you have, or hold and try to collect the rest.

Closing early often makes sense when a large share of the premium is already in your pocket and plenty of days are left. You'd be holding the full risk for a small amount of money. Holding often makes sense when only a few days are left and the stock is far from the strike.

There's no single right answer. There's a trade-off you can put in numbers.

How time decay really runs

Time value doesn't melt evenly. For strikes near the stock price, it melts slowly at first and faster in the final weeks. For strikes far from the price, more of it goes earlier.

What also speeds up near the end is how much the option jumps when the stock moves. That's called Gamma risk. A small move in the last week can flip a nearly worthless option into one that costs more than you collected.

So the last stretch pays well per day, but it's also where a surprise hurts most. Our theta decay explained page shows the curve.

A worked example (an illustration, not a trade idea)

A made-up stock, XYZ, trades at $50. You sell a 45-day $45 put for $2.00 and collect $200. You set aside $4,500.

Day 20: XYZ is at $51. The put is now worth $1.00. You've captured half the premium in 20 days. There are 25 days left.

Choice 1: buy it back for $1.00. You keep +$100, and the $4,500 is free.

Choice 2: hold to expiry for the other $1.00.

Here's what each choice ends up as, from day 20:

Holding risked the whole position to earn one more dollar per share. In two of five rows, holding ended in a loss. Closing never did.

That doesn't mean closing always wins. If XYZ stays above $45, holding collects twice as much. It's a question of what you're paid for the risk.

Reward per day vs risk per day

Put the choice in plain terms:

• First 20 days: you collected $100 over 20 days, with $4,500 at risk.
• Last 25 days: $100 is left, spread over 25 days, with the same $4,500 at risk and more gamma.

You'd be taking a slightly worse deal per day, with more swing, for the same obligation. Many sellers turn that down. They close and, if they still like the stock, sell a fresh put further out. The new put pays more per day, with more time for the stock to recover from a dip.

Two habits many sellers use, as starting points rather than laws:

1. Close at about half the premium, whenever that happens.
2. Close or roll around 21 days before expiry, whatever the profit, to step out before gamma ramps up.

Our close at 50% vs hold to expiry page compares the first habit in more detail.

When holding makes more sense

Closing early isn't free. Each close costs a commission and part of the bid-ask spread, so use a limit order (see limit vs market orders). On a cheap option, the last few cents may not be worth the cost of buying back.

Holding is often fine when:

• Only a few days remain and the stock is far from the strike.
• The option is already worth a nickel or less, and buying back costs more in fees than the risk is worth.
• You'd be glad to be assigned at the strike anyway, as in the wheel strategy.

Even then, check two dates first: earnings and the Ex-dividend date. Either one inside the last days changes the picture fast.

How to make it automatic

The decision is easier when it's made in advance.

1. When you sell an option, decide your close target. For example, buy back at half the premium.
2. Enter a GTC order at that price right away. It fills on its own if the price gets there.
3. Pick a date to review if it hasn't filled, such as 21 days before expiry.
4. Write the plan in your journal next to the trade.

Then you don't have to watch the screen, and the choice isn't made in a rush.

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